FR926598A - Improvements to the process for producing cathodes for electron tubes - Google Patents

Improvements to the process for producing cathodes for electron tubes

Info

Publication number
FR926598A
FR926598A FR926598DA FR926598A FR 926598 A FR926598 A FR 926598A FR 926598D A FR926598D A FR 926598DA FR 926598 A FR926598 A FR 926598A
Authority
FR
France
Prior art keywords
electron tubes
producing cathodes
cathodes
producing
tubes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR926598A publication Critical patent/FR926598A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/24—Insulating layer or body located between heater and emissive material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Discharge Lamp (AREA)
FR926598D 1946-03-05 1946-03-05 Improvements to the process for producing cathodes for electron tubes Expired FR926598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR836527X 1946-03-05

Publications (1)

Publication Number Publication Date
FR926598A true FR926598A (en) 1947-10-06

Family

ID=9298138

Family Applications (1)

Application Number Title Priority Date Filing Date
FR926598D Expired FR926598A (en) 1946-03-05 1946-03-05 Improvements to the process for producing cathodes for electron tubes

Country Status (6)

Country Link
US (1) US2520760A (en)
CH (1) CH266493A (en)
DE (1) DE836527C (en)
FR (1) FR926598A (en)
GB (1) GB630624A (en)
NL (1) NL69250C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL102345C (en) * 1954-06-16
FR1137688A (en) * 1954-10-22 1957-06-03 Thomson Houston Comp Francaise Advanced cathode
NL262042A (en) * 1960-03-11
CH539945A (en) * 1971-12-29 1973-07-31 Bbc Brown Boveri & Cie Process for the production of grid electrodes for electrical discharge vessels
GB8611967D0 (en) * 1986-05-16 1986-10-29 English Electric Valve Co Ltd Directly heated cathodes
DE4026301A1 (en) * 1990-08-20 1992-02-27 Siemens Ag ELECTRON EMITTER OF A X-RAY TUBE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106855A (en) * 1924-02-20 1938-02-01 Westinghouse Electric & Mfg Co Space-current device
NL33511C (en) * 1926-07-07
US1961122A (en) * 1928-08-22 1934-05-29 Westinghouse Electric & Mfg Co Thermionic cathode
CH215769A (en) * 1938-12-02 1941-07-15 Lorenz C Ag Cathode for electron tubes.
US2263169A (en) * 1940-10-12 1941-11-18 Westinghouse Electric & Mfg Co Indirectly heated cathode

Also Published As

Publication number Publication date
NL69250C (en)
US2520760A (en) 1950-08-29
DE836527C (en) 1952-04-15
GB630624A (en) 1949-10-18
CH266493A (en) 1950-01-31

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